Duration Extender shows wrong values for Viscous' Cube ability

[treacherousfiend]

In the store, instead of showing both the duration of the cube and its T1 buff, Duration Extender and Superior Duration show the adjusted value for the T1 buff after leaving the cube, but the unadjusted value is for the cube itself's duration. After purchase, the correct cube duration is 4.6s. The 9.3s does correctly correspond from the buff increasing from 8s to 9.3s

 

[Fishjump]

It seems to also not affect the stun duration on Goo Ball, although it may be intentional.